External battery



FIG. 1 is a perspective view of an external battery showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a reference perspective view thereof being assembled with an electronic apparatus; and,

FIG. 9 is a reference perspective view thereof showing the external battery installed on the electronic apparatus for use.

The broken line portions of the external battery in all views represent unclaimed portions of the claimed design and form no part thereof 

CLAIM The ornamental design for an external battery, as shown and described. 